Bottle Top Filters

Bottle top filters are designed for sterile filtration of large volumes, typically used to filter cell culture media, buffers, or reagents into sterile bottles. These devices combine a membrane unit with a screw-threaded top that fits standard lab bottles or filter flasks. They’re essential in tissue culture, reagent preparation, and media sterilization, with pore sizes ranging from 0.1 to 0.45 µm. Most feature PES or PVDF membranes and come pre-sterilized. Wasteless Bio provides unused bottle top filters, specifying membrane type, volume capacity, pore size, and compatibility—allowing labs to reduce waste while maintaining aseptic standards.